Filtration system



FIG. 1 is an isometric view of an ornamental design for a filtrationsystem;

FIG. 2 is a front elevational view of the filtration system of FIG. 1;

FIG. 3 is a rear elevational view of the filtration system of FIG. 1;

FIG. 4 is a left side elevational view of the filtration system of FIG.1;

FIG. 5 is a right side elevational view of the filtration system of FIG.1;

FIG. 6 is a top plan view of the filtration system of FIG. 1; and

FIG. 7 is a bottom plan view of the filtration system of FIG. 1.

FIG. 8 is an isometric view of an alternative embodiment of anornamental design for the filtration system depicted in FIGS. 1-7;

FIG. 9 is a front elevational view of the filtration system of FIG. 8;

FIG. 10 is a rear elevational view of the filtration system of FIG. 8;

FIG. 11 is a left side elevational view of the filtration system of FIG.8;

FIG. 12 is a right side elevational view of the filtration system ofFIG. 8;

FIG. 13 is a top plan view of the filtration system of FIG. 8; and,

FIG. 14 is a bottom plan view of the filtration system of FIG. 8.

The broken lines showing the filtration system are included for thepurpose of illustrating environmental structure and form no part of theclaimed design. The stippling region provided between the dash-dot-dashlines in FIGS. 8-12 indicate tonal contrasts in appearance of thefiltration system. The stippling does not represent any particularcolor, pattern, material, texture, or finish.

CLAIM The ornamental design for a filtration system, as shown anddescribed.